1111 and other number and colors

I was introduced to the number idea by a very special friend and every since that all i been noticing and prior to that i've always associated certain number with colors all the time if i'm thinkg about the number 3 i think of green when i think of the number 7 the color in my mind is brown the number 5 is red and so on and so forth when i'm writing down a phone number my mind get mixed up with the colors and instead of me writing the number my i put the first letter of the color so my number are 888-b00-g111what's up with that